The TTV2010D is a 200 Amp main breaker load center with a built-in 100A manual transfer switch. The TTV features 38 full-sized circuit breaker spaces and is approved for use the following branch circuit breakers: Siemens Type QP, QT, QPH, HQP, QE, QEH; Square D Series HOM to 100A maximum; Murray MP; C-H/Westinghouse Series BD, BR, BQ, GFC, TO 100A maximum. The TTV2010D panel is designed for use with generators up to 25,000 running watts. It includes a 200A main circuit breaker interlinked with a 100 Amp generator circuit breaker. The interlinked circuit breakers keep the generator isolated from the utility at all times, even with the deadfront removed.